The Pho Phaeng Flood Situation, According to News Reports

According to Dailynews, on 2 October 2026 the sandbag barrier at the Khlong Pho Phaeng water gate in Moo 5, Pho Phaeng, Pa Mok collapsed, and water rushed into the area behind it. Water depth reached roughly 2 to 3 metres, 98 households were affected, and villagers' frog ponds were damaged. The same report said the Chao Phraya Dam was releasing about 2,500 cubic metres per second at the time, and the water level in front of the Ang Thong Provincial Hall stood at 9.00 metres, above the critical mark of 8.00 metres. The report also noted that the same spot had failed the year before.

The national picture is serious too. Data from the Department of Disaster Prevention and Mitigation (DDPM), published by the Government Public Relations Department as of 06:00 on 7 October 2026, listed 27 provinces plus Bangkok affected by flooding, covering 123 districts, 984 subdistricts, 1,154,875 households and more than 3.1 million people. Ang Thong, on the Chao Phraya floodplain, is among the provinces taking large volumes of water.

What makes this flood different from ordinary standing water is speed and depth. When a dike fails, the current carries silt, plant debris, water from animal ponds and sewage pushed up from toilets and septic tanks into homes all at once. At two to three metres, water reaches floors, walls, power outlets, cupboards and in some homes the upper floor. Every surface it touched should be treated as contaminated until it has been cleaned and disinfected properly.

Example Case: A Frog Farmer's Home by the Canal, and a Smell That Would Not Leave

Note: this is a typical scenario based on situations commonly seen after floods in riverside communities. It does not describe any real family in the area.

Uncle Som has lived beside the canal in Pho Phaeng since childhood. Behind his house are four concrete frog ponds that supply a market in town. Before the night the sandbags gave way, he and his son had lifted some belongings to higher shelves, but nobody expected the water to come so fast. Within hours it passed knee height and then reached the ground-floor windows. The family moved the grandparents and a young grandchild to a temporary shelter, while the frog ponds disappeared under the flood.

Days later, as the water began to fall, Uncle Som paddled back. Grey-black mud lay almost a hand's width deep across the floor. A straight tide line ran across the concrete walls above head height. Wooden cupboards had swollen shut. Mattresses gave off a sour smell, and a fishy odour from the ponds hung in every room. His son hosed the floors for two days and poured in several bottles of toilet cleaner and bleach, yet the musty smell stayed, black spots began to appear low on the walls, and the youngest grandchild developed diarrhoea the day after visiting.

The family did nothing wrong. They did what most people do: shovel mud, then wash. The problem is that a dike-breach flood brings many germs at once. Some come from rat and animal urine, some from human waste, some live in soil and mud, and some are molds that start to grow in materials that stay wet. Washing removes a great deal, but without a systematic disinfection step afterwards, the home is still not ready for small children and older relatives.

Flood Germs in Pho Phaeng, Pa Mok: Know Them Before You Move Back In

This was a dike-breach flood: deep, fast, and passing through farmland, animal ponds, toilets and rubbish heaps before settling inside homes for days. Below are the key germs to know, with their scientific names, how floodwater spreads them, where they hide after the water recedes, symptoms, who is at risk, and prevention. This is general information for prevention, not treatment advice. Anyone who feels unwell should see a doctor promptly.

1. Leptospira, the Cause of Leptospirosis

How it arrives: Leptospira lives in the urine of rats and other animals such as cattle, buffalo and dogs. When fields and embankments flood, rats move into homes, roofs and storage piles, and their urine mixes with floodwater and mud.

Where it hides: wet mud on floors, under cupboards and stairs, yards, animal pens and the edges of frog ponds. It prefers damp, shaded places and can survive in wet mud for days to weeks.

Symptoms and risk: it enters through cuts, scratches, the eyes, nose or mouth, or skin softened by long soaking. Symptoms usually start within about 2 to 30 days: sudden high fever, headache, strong muscle pain especially in the calves, and red eyes. Some people develop kidney or liver complications. People who wade, shovel mud and clean barehanded or barefoot are at highest risk.

Prevention: wear rubber boots and gloves, cover wounds with waterproof plasters, wash hands and feet with soap afterwards, and see a doctor about any fever after wading, mentioning flood exposure.

2. Escherichia coli from Sewage and Flooded Toilets

How it arrives: E. coli lives in human and animal intestines. When water rises two or three metres, septic tanks in canal-side homes are pushed over and waste mixes with the flood. E. coli is the classic sign that water carries faecal contamination.

Where it hides: bathroom floors, drains, kitchen sinks, counters, flooded dishes and children's toys left on the floor.

Symptoms and risk: diarrhoea, stomach cramps and nausea; some strains can cause bloody diarrhoea. Young children, older adults and people with weak immunity can become dehydrated quickly.

Prevention: throw away food and drinking water touched by the flood, wash dishes in clean water and detergent and then disinfect them, and wash hands before every meal.

3. Salmonella from Frog Ponds, Animals and Poultry

How it arrives: Salmonella is found in the gut of many animals, including poultry and amphibians such as frogs. When frog ponds and chicken coops in Pho Phaeng flooded, droppings and pond water spread with the current into nearby homes.

Where it hides: pond edges and equipment, back yards, kitchen floors, chopping boards and food cupboards that were underwater.

Symptoms and risk: fever, diarrhoea, cramps and vomiting, usually within hours to a few days. Young children, older adults and pregnant women should be especially careful.

Prevention: clean animal areas separately from the kitchen, use separate gloves, wash hands after handling animals or pond gear, and cook food thoroughly. According to WHD product information, Salmonella is one of the organisms CHEMGENE HLD4H is stated to cover.

4. Aeromonas, a Freshwater Bacterium That Targets Wounds

How it arrives: Aeromonas occurs naturally in fresh water, canals and fish or frog ponds, so canal and pond water in Pho Phaeng suits it well.

Where it hides: puddles around the house, flooded water jars, unwashed wet surfaces and debris carried in by the current.

Symptoms and risk: through a wound it can cause swelling, redness and heat; swallowing contaminated water can cause diarrhoea. People with liver disease, diabetes or weak immunity may have more severe illness.

Prevention: avoid wading with open wounds, rinse any wound with clean water right away, and see a doctor if it becomes red, swollen or feverish.

5. Burkholderia pseudomallei, the Melioidosis Germ in Soil and Mud

How it arrives: this bacterium lives in soil and surface water in Thailand. It is most common in the Northeast but is found in other regions too. When floods wash topsoil from fields into homes, the mud left behind may carry it.

Where it hides: thick mud layers, earth yards, vegetable plots and unwashed boots or shovels.

Symptoms and risk: it can enter through wounds, by breathing in muddy spray, or by swallowing. Illness varies: prolonged fever, pneumonia or abscesses. People with diabetes, kidney disease or heavy alcohol use face higher risk.

Prevention: wear boots and gloves when shovelling, wear a mask when pressure-washing, let people with diabetes avoid mud work where possible, and see a doctor about a fever that does not settle.

6. Hepatitis A Virus from Contaminated Water and Food

How it arrives: hepatitis A spreads from faeces to mouth. When village sanitation floods, drinking water, washing water and food prepared with unclean hands can carry it.

Where it hides: water jars, taps, cups and bathroom door handles shared during the clean-up.

Symptoms and risk: tiredness, poor appetite, nausea, pain under the right ribs, yellow skin and eyes, and dark urine. The incubation period is several weeks, so illness may appear long after the water has gone. Adults often show clearer symptoms than children.

Prevention: drink bottled or boiled water, wash hands before preparing food, clean water jars before reuse, and ask a doctor about vaccination if you are in a risk group.

7. Norovirus, the Stomach Virus That Spreads Fast in Shelters

How it arrives: norovirus spreads through stool, vomit, food, water and contaminated surfaces, and only a tiny dose is needed. While families from Pho Phaeng stayed together in shelters or relatives' homes, it could pass from person to person and then travel home.

Where it hides: door knobs, stair rails, toilets, taps, remote controls and dining tables. It can persist on surfaces for days.

Symptoms and risk: sudden vomiting, diarrhoea, cramps and mild fever, often resolving in a few days, but children and older adults risk dehydration.

Prevention: wash hands with soap and water, as alcohol gel alone may be less effective against this virus, clean and then disinfect shared touch points, and give a sick person a separate bathroom if possible. According to WHD product information, norovirus is one of the organisms CHEMGENE HLD4H is stated to cover.

8. Staphylococcus aureus and Wounds from Debris

How it arrives: many people carry this bacterium on their skin and in their nose. When someone steps on a nail, broken glass or corrugated metal carried by the flood, and the wound keeps soaking in dirty water, infection becomes much easier.

Where it hides: rags, shared towels, unwashed gloves and the handles of brooms and shovels.

Symptoms and risk: red, hot, painful, swollen wounds, pus, boils or spreading skin infection. People with diabetes and older adults whose wounds heal slowly need extra care.

Prevention: wear thick-soled boots, rinse wounds with clean water, keep them covered and dry, avoid sharing towels, and after any cut from muddy debris see a doctor about tetanus vaccination, because Clostridium tetani also lives in soil and mud.

9. Dermatophytes and Water-Soaked Feet

How it arrives: feet soaked for hours each day become soft and irritated, a condition Thais call "nam kat thao". If the skin stays damp, dermatophyte fungi such as Trichophyton, along with bacteria, can follow.

Where it hides: boots that never dry, wet socks, doormats, bathroom floors and flooded mats.

Symptoms and risk: itching between the toes, peeling, cracking, odour, and sometimes blisters or raw patches. Farmers and volunteers who wade daily are most exposed.

Prevention: wash feet with soap, dry carefully between the toes, change socks often, dry boots upside down, and see a doctor if skin cracks open or the rash spreads.

10. Household Molds: Stachybotrys, Aspergillus and Penicillium

How it arrives: when two or three metres of water soak walls and materials for days, moisture moves deep into plaster, wood, ceilings, gypsum, mattresses and curtains. Mold spores already in the air begin to grow within days. CDC advises cleaning and drying quickly to limit mold growth.

Where it hides: the lower walls below the tide line, behind cupboards, under wooden floors, ground-floor ceilings, air-conditioner vents, mattresses and cardboard boxes. Stachybotrys favours cellulose materials such as gypsum board and paper, while Aspergillus and Penicillium are widespread.

Symptoms and risk: blocked nose, sneezing, coughing, eye and throat irritation, and asthma flare-ups. People with allergies or lung disease, and those with weak immunity such as patients on chemotherapy, face higher risk, including Aspergillus lung infection.

Prevention: discard soaked and heavily molded materials, scrub hard surfaces, open windows and use fans to dry, and wear a mask and gloves while cleaning. According to WHD service information, fungi are among the groups the spraying service is stated to cover. If a musty smell lingers, residential ozone disinfection can be added as a complementary service.

What Pho Phaeng Families Risk If They Skip Disinfection

Health: crawling babies, older relatives with chronic illness and pregnant women cope less well with stomach bugs, wound infections and mold. Small problems can grow quickly.

Money, time and peace of mind: frog farming families have already lost income, and many homes here have faced a dike failure two years running. Medical bills, or tearing out molded walls and furniture a few months later, add to the burden.

Why Shovelling and Washing Alone Are Not Enough

Pouring bleach on the floor: bleach loses strength quickly in heavy dirt, strong mixes give off irritating fumes, and it must never be mixed with toilet cleaners or ammonia because dangerous gases form. It also rarely reaches high walls and corners.

Running fans and waiting: drying is vital, but fans do not disinfect, and walls soaked two or three metres deep hold moisture far longer than they appear to.

Painting over black stains: fresh paint does not reach mold inside the plaster. Many homes see stains and smells return within weeks.

Washing is essential and always comes first. Systematic spraying after washing closes the gaps ordinary cleaning cannot reach.

How the WHD Post-Flood Spraying Service Works for Homes in Pho Phaeng

World Health Disinfection (WHD) is based in Bang Khae, Bangkok 10160. It has no branch in Ang Thong, but upcountry jobs can be arranged by phone or LINE; the team assesses the site, distance and schedule before confirming a date. According to WHD service information, trained technicians spray and/or apply Ultra Low Volume (ULV) fine mist using CHEMGENE HLD4H, a medical-grade disinfectant from the United Kingdom containing Benzalkonium Chloride and Didecyldimethylammonium Chloride.

1. Survey: send photos or video through LINE @whd268 with the flood height, number of floors, approximate area and special zones such as animal ponds, food stores or a sick person's room.
2. Mud removal and washing first: spraying happens only after mud is out, surfaces are washed and soaked materials are discarded, because disinfectant works best on clean surfaces.
3. Zoning: kitchen, bathrooms, bedrooms, storage and animal areas are handled separately so germs from the dirtiest areas are not carried into cleaner ones.
4. Spraying: floors, walls below and above the tide line, doors, knobs, rails, counters and touch points are covered, with ULV mist for wide areas and corners. People, pets and livestock stay out of the zone being sprayed.
5. Re-entry: according to WHD service information, wait about 30 minutes and then use the space normally, always following the re-entry time the technicians give on site and ventilating as advised.

We do not claim the product leaves no residue. Food containers, children's toys and food-contact surfaces should be rinsed with clean water as the technicians advise. According to WHD service information, customers receive a free CHEMGENE spray bottle and WELLGIENIC wet wipes, and a tax invoice is available. Price and date are confirmed after assessment. Read more about the CHEMGENE HLD4H disinfectant.

10 Reasons Canal-Side Homes in Ang Thong Should Disinfect After the Flood

1. A dike breach brings germs from many sources at once: canal, fields, animal ponds and septic tanks.
2. Two to three metres of water reaches surfaces too high to wipe by hand; spraying reaches upper walls, frames and ceiling gaps.
3. A medical-grade disinfectant with clear information: CHEMGENE HLD4H is stated to cover many viruses, bacteria and fungi. See the disinfection service page.
4. Listed approvals and references: the service page lists the Department of Medical Sciences, Mahidol University, NHS England and EN 14476:2013+A2:2019.
5. Trained technicians know the hot spots: knobs, rails and bathrooms.
6. ULV mist reaches corners behind furniture.
7. Lower risk for children and older relatives returning from shelters.
8. A short wait: about 30 minutes according to service information, following the technicians' instructions.
9. Trusted by many sectors: hospitals, schools, offices and homes.
10. Easy booking: call 065-556-6294 or LINE @whd268 with photos first.

Before and After Spraying

Results depend on the home's condition, cleaning before spraying and moisture control afterwards. Spraying does not replace structural repair or medical care.

Recovery Checklist for Pho Phaeng, Pa Mok

• Wait for official word from Ang Thong province and Pa Mok district that it is safe to return.
• Have an electrician check wiring before switching on; never touch wet switches.
• Wear boots, rubber gloves, a mask, goggles and long sleeves; watch for snakes and centipedes.
• Shovel out mud, then wash surfaces with clean water and detergent.
• Throw away soaked mattresses, carpets, cardboard and flood-touched food; photograph losses.
• Clean frog ponds and animal pens separately from the house.
• Open doors and windows to dry the house quickly.
• On spraying day, keep people and pets out of the zone and return when the technicians say.
• Rinse food containers and toys again; watch for returning mold over the next weeks.
• See a doctor for fever, calf pain, diarrhoea, yellow eyes or infected wounds.

FAQ

Can WHD serve Pho Phaeng in Pa Mok?
WHD is in Bang Khae, Bangkok, with no Ang Thong branch, but upcountry jobs can be arranged through 065-556-6294 or LINE @whd268 after assessment. Same-day service cannot be promised.

When can we go back in?
According to service information, about 30 minutes after spraying, following the technicians' on-site instructions and ventilating first.

Does it work against leptospirosis?
The product information does not list Leptospira by name, but it is a bacterium, within the group the product says it covers. Ask for specific test data if you need it. Anyone with fever or calf pain after wading must see a doctor.

Can you spray near frog ponds or pens?
Tell the team in advance. Animals must be moved out first, and disinfectant should not go into water holding live animals.

Bring Your Family Home to Pho Phaeng with Confidence

Send photos of your home after the water drops so WHD can assess it, then plan spraying once the mud is out.

Ask About Disinfection Spraying

Call 065-556-6294 | LINE @whd268

Related Links and References

• WHD Disinfection Spraying Service
• Residential Ozone Disinfection
• Dailynews (2 Oct 2026), Khlong Pho Phaeng sandbag dike failure: dailynews.co.th
• Government Public Relations Department, DDPM flood update (7 Oct 2026): prd.go.th
• CDC Floods: cdc.gov/floods
• WHO Fact Sheets: who.int
• Department of Disease Control, Thailand: ddc.moph.go.th